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← ScienceWhich outcome results when hydrostatic pressure diminishes band overlap in Bismuth?
A)Increased electrical resistivity occurs✓
B)Enhanced piezoelectric generation takes place
C)Higher thermal conductivity emerges
D)Augmented optical transparency develops
💡 Explanation
Increased pressure usually increases band overlap/decreases resistivity but decreasing band overlap drives it away from semimetal to semiconductor, therefore increasing resistivity because decreased band overlap reduces carrier concentration, rather than enhancing conductivity. "Semimetal-Semiconductor Transition" is the central mechanism here.
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